const int POT = A5;
const int Switch_Pin = 13;
const int Green_LED = 18;
const int Red_LED = 11;

void setup()
{
 pinMode(POT,INPUT);
 pinMode(Switch_Pin,INPUT);
 pinMode(Green_LED,OUTPUT);
 pinMode(Red_LED,OUTPUT);

 Serial.begin(9600);
 Serial.println("Voltage Regulation");
}

void loop()
{
  int State = digitalRead(Switch_Pin);

  if(State == HIGH)
  {
    digitalWrite(Green_LED,HIGH);
    digitalWrite(Red_LED,LOW);

    int POT_Value = analogRead(POT);
    float Voltage = POT_Value*(5.0/1023.0);

    Serial.print("Potentio:");
    Serial.print(POT_Value);
    Serial.print("\tVoltage:");
    Serial.println(Voltage);

  }
  else
  {
    digitalWrite(Green_LED, LOW);
    digitalWrite(Red_LED, HIGH);
  }
  delay(250);
}